Borderline Beings.

AutNotes: So uh yeah sup dudes! This is gonna be a oneshot though I will expand if people want to. Just don't expect me to update every week or something. School is really gonna prevent me from updating :P Anyways go read and enjoy. :D

A loud bloodcurdling roar was heard over the horizon. Nobody knew where it came from or what had caused it. All Finn and Jake knew that they had to find out what was going on. The fourteen-year old still wore his bear hat and pretty much the same attire as before. He heard the noise one afternoon while practicing how to throw knives.

'Hey Jake did you hear that?' His golden companion had a cup of hot chocolate in his hand at the time. 'Yeah dude. You think we should go check it out?'

Finn stood up from the couch and readied his demoinc sword from his green backpack. 'Totes man. It's our job as adventurers to find out what's going on and help whoever is in trouble.'

'Alright!' Jake exclaimed while setting down his cup on a table and signeld for Fin to go climb on his back as he started to grow larger.

'Woohoo!' Finn shouted while riding on the back of his giant golden-furred dog as he was running on all fours, outside their tree home towards the noise.

They reached a rocky valley when they had saw what was going on.

They saw this huge beast (Imagine a giant ape-like creature with a Godzilla head, sharp-ass claws and horns that greatly resemble the devil's) terrorizing a village of rock people. (If you don't know what rock people would look like, look for the rock wizard in the episode: 'Wizard Battle'

'Woah Finn that dude looks tough.' Jake said with a shocked face.

'Pfff I can handle this guy. What's something I've never been able to handle?' He was clearly cocky and overconfident. Finn readied his demon blood sword and ran to the monster screaming: 'RAHHHHHHH!'

'Oh boy this is gonna get ugly real fast.' Jake reluctantly chased his brother to engage in combat with the behemoth.

Finn ran over to the beast's foot and stabbed it. Well more like tried to stab it. His sword couldn't penetrate the monster's thick skin easily. 'Ugh! Why won't my sword cut him already?'

Finn tried severalt times until the monster eventually started to notice the little pokes. He swatted Finn aside, knocking him over to a huge rock.

Finn groaned when he was smashed into the rock. 'Ughhhh. This sucks.' Meanwhile, Jake had grown to the beast's size and managed to punch it's gut.

'Take that you wuss!' Jake cried out.

The beast staggered back and once he was ready, he charged at Jake while growling. It was like watching a giant monster movie from Japan.

As the two were fighting, they were destroying the rock city slowly. Everytime Jake would accidentally step on a house he would apologize by shouting: 'Sorry about your house!'

But the beast had the advantage. He was stronger than Jake and his hits would send Jake falling back instead of just a mere stagger.

'Man this thing is tough!' Jake said. He also didn't notice that his brother was knocked out cold on a rock.

The beast gave out another roar and kicked Jake down to the ground. He was about to bite Jake's arm off(literally) but Jake had managed to shrink down and escape the monster's jaws.

'Finn!' He ran over to his unconscious brother and grabbed him. Then with all his strentgh, he ran as fast as he could away from the monster.

Once the monster had continued to terrorize the village, Jake was already back at the tree fort and laid Fin down on his bed.

Both of them had cuts and bruises all over them. Jake had a black eye too. Jake quickly grabbed some bandages and hastily covered his brother's wounds. Meanwhile he had grabbed and ice pack and put it on his head.

'Dang today really sucked.' Jake said out loud.

They hadn't realized they had been fighting for a long time. When they reached the monster it was 6pm. Now it's 8:30. Both had already fallen asleep soundly in their respective beds. Jake was in his drawer-bed and Finn was on his regular bed.

-The next morning-

Finn woke with a jolt. He saw that they were back home and Jake was asleep. He also saw the bandages around his head, arms and his left knee.

He tried to get up but the sore pain in his legs stopped him instantly. 'UGH!' He then went back to lying in his bed thinking if they had killed the behemoth.

'Man I'm really busted up.' He thought. He saw his brother was starting to wake up slowly. And of course eventually Jake woke up lazily.

'Oh hey Finn...*yawns* you want breakfast?'

'Sure dude but did we kill that thing yesterday?' Jake got up from his bed and said: 'Nah he was too strong.'

'WHAT? Dude those stone peeps are probably still getting their buts whopped!' Finn yelled angrily.

'Chill man maybe their king or something came back and fought off that thing.'

'Dude you know about my obsession to help people so we still have to get back there...' He said trying to calm down.

'Aww man! Could we at least breakfast first?'

Finn smiled at his dog and replied: 'Sure dude.'

The two climbed down their bedroom ladder and went into the kitchen. Finn sat down while Jake began cooking some pancakes.

'Hey Finn you want bacon with your pancakes?' He asked without looking at him. 'Nah man. In fact just give me half a pancake, I don't really feel hungry right now.'

'Um ok. Will do Finn!'

Finn chuckled. 'Thanks dude.'

Jake finally got the pancakes ready. Jake hungrily started to chomp on his pancakes while Finn was doing the same with his half-pancake. After breakfast, they got ready to go back to the rock valley where the behemoth was.

'Dude aren't your legs still sore from yesterday?' Jake asked before he could let his brother ride on his back.

'Eh I'm ok dude. It hurts but I can take it.'

'Alright Finn if you say so. RAAAAHHHHHH!' Jake shouted as he grew larger. 'Hop on my back dude!'

'Hahah ok!' Finn jumped up to his brother's back adn the two made their way to the rock valley. That was the plan until Finn had an idea.

'Jake WAIT!' Jake stopped abruptly. 'Huh what dude?'

'Jake, if were going back to face this freak, how are we gonna kick his butt? We'll just get OUR butts kicked again.'

Jake thought about his brother's thoughts. 'Alright then what should we do? Should we call for help or something?'

'Yeah dude but who do we call for help?'

The two were deep in thought.

The princess was out of the picture since she didn't know how to save herself.

Lady Rainicorn was possible but this thing was really tough.

Ice King...heck no.

LSP...who even relies on her for help?

Marceline, maybe...but I don't know if she could fight properly with her sun hat and all.

Jake spoke up. 'You think of anyone dude?'

'Well the only two possibilities I have right now are either Marceline or Lady Rainicorn. What do you think dude?'

'Hold on I'll go call Lady. Hey Finn do you have my phone?'

'Yeah dude I always keep it in my pack.' Finn sifted through his backpack and found Jake's cellphone. 'Here dude.'

'Thanks man.' Jake dialled his girlfriend's number and waited for her to answer. The phone eventually picked up and the two started to talk. Once they were done, Finn impatiently asked: 'What'd she say?'

'Oh uh she said she couldn't because she was visiting her parents at the Crystal Dimension.'

'Well that makes Marceline our last choice.' They then made their way to Marceline's cave where they saw her house. Jake shrunk back to normal and the two walked up to her door.

'Marcy you in there?' Finn yelled from outside.

Instead of a reply they heard a groan coming from the sceond floor.

Marceline peeked through her window from the second floor and saw Finn and Jake. She opened her window so she should talk to the two.

'What in the world do you guys want now?' Her words were laced with frustration and venom.

'Uh oh sorry we didn't mean to get you angry or anything! I guess we'll just leave then.' Finn yelled from outside her house.

Marceline sighed and yelled back to them: 'No I should be sorry you guys. It's just that time of the month again.' followed by another sigh.

Finn blushed when he heard that. He turned back to her saying: 'So does that mean you'll help us?'

'Well that kinda depends...what do you guys need me for? You two can handle pretty much anything that comes your way. Even the lich.' Her voice was then starting to calm down.

'There's this kinda monster that's really hard to beat and we were wondering if you could go help us...maybe?' Finn yelled from the outside of Marceline's house.

'Sure I'll go get my axe-bass and come down.'

Within minutes Marceline came out in her usual get-up. Dark gray tank with a blackish blue pair of pants and red boots. She had her axe-bass in her left hand and near her left pocket was a gleaming knife that had some inscriptions on it. The blade was a dark green hue and the hilt was made of obsidian along with a red gem in the middle.

'Woah where did you get that awesome knife?' Finn was practically drooling over the blade. It looked amazing to him.

'Oh this? Well it was a gift I think. Not really sure where it came from or made it.'

'What is it made of?' Finn was still staring in amazement at it.

'I think it's made of molten sapphires.'

'Wait so someone melted precious gems just to make a knife?' Jake asked confused.

'Yeah I think so.' Marceline calmly replied.

'That is so...AWESOME!' Jake shouted with a smile on his face.

'Yeah well are we gonna go or something?' Marceline asked.

'Oh yeah it's just that...that knife is so awesome!' Finn said. 'Well anyway Marceline let's hop on Jake's back and let's go kill something!'

Marceline laughed and hopped on Jake as he grew larger until they were ready to travel.

The three made their way to the rock valley where they first saw the beast. And just as they expected, the monster was still terrorizing the rock people.

'Hey Marceline?'

'Yeah?'

'What time is it?'

'I don't have a watch you know.'

'Ugh no you were supposed to say ADVENTURE TIME!.'

'Oh I thought that was you and Jake's thing.'

'Oh anyways get ready to fight that thing.' Finn pointed to the horrific beast that was swatting away rock houses and people.

In the midst of the chaos, Jake shrunk down and let Finn and Marceline get ready.

'You guys ready?' Jake asked.

'Heck yeah we are.' Finn alone replied.

The three now faced the giant beast and prepared themselves.

Finn grabbed the family sword and Marceline readied her axe-bass in her left hand and her knife in her right.

'Let's do this weenies.'

-Epic battle music starts to play- (I recommend you listen to some maybe heavy metal while reading the next part. :D)

'RRRRAAAAAAAAHHHHH!' Finn shouted as his two other friends charged with him.

Jake stretched into a trampoline so Finn and Marceline could jump over to the monster's head.

Jake grew and started to hit the beast.

'Finn! You and Marceline find a weak spot! I'll go distract him!' Jake jabbed the beast in the gut while the beast kicked Jake down.

Meanwhile on the monster's shoulders, Finn had started to stab random areas around the monster.

'Finn you won't find any weak spots that way!' Marceline shouted because the monster kept roarong which made things harder to hear.

Marceline began to feel around the neck of the beast and thankfully she had foud a soft and squishy part of the beast.

'Finn I think I found it!' Finn rushed over to her side while trying not to fall off the beast.

Marceline showed him a throbbing area that had a vein near it.

'So you wanna do the honors?' Finn asked smiling at her.

'Hell yeah I will.' Marceline pulled her knife ready and stabbed it through the neck.

A loud roar was heard and the monster stopped beating up Jake and swatted Finn and Marceline off him resulting in them crashing to the ground.

-End battle music-

'Finn!' Jake shouted as he shrunk and rushed to his brother.

The monster roared again as his neck started to bleed. Although the bleeding was minimal because Marceline didn't get a chance to make a long and deep cut.

The monster started to run off and Jake was getting ready to chase after it but a hand stopped him.

Finn got up and said: 'You're not chasing him without me dude.' Jake smiled as he helped Finn stand up. When Finn stood up he helped Marceline get up and soon they ready to get back into the fight.

The two got on Jake and Jake ran as fast as he could to catch up the monster.

They were in hot pursuit of the beast. It ran fast but Jake was faster.

Eventually they saw something come up the horizon. It was something pink and big. It was a magical barrier or so they thought.

'Heh that thing's trapped. There's no way he can get pat that magical barrier.' Jake said to the two on his back.

'Don't say that just yet Jake.' Marceline thought he was being too cocky.

The monster got closer and closer to the barrier and eventually disappeared into it.

Jake stopped and shrunk down.

'Well looks like he did get through that barrier.' Finn said sighing.

'Aww man this sucks. We almost had that thing and we lost him!' Jake shouted angrily.

'Please. If that thing could get through, what makes you think we couldn't?' Marceline asked while wiping some blood off her arm.

'Only one way to find out. We go in on three?'

Marceline and Jake nodded.

'One.'

'Two.'

'Three!' All jumped through and they found the monster running through the grasslands.

'There he is! Let's go get him!' Jake shouted.

The monster saw they had come back so it decided to fight back as well.

It first targeted Jake. It punched large Jake in the nose and continued to do so until he was down. Jake was out cold. All that's left were Finn and Marceline.

'Finn it looks like Jake's out. It's up to us to fight this thing.' The monster gave a loud cry and tried to crush them both with with his foot but the two had dodged the attack.

'We've only got one more chance to kill this thing so let's end it.' Finn said to his vampire friend.

'Ok I'm gonn-' Marceline was cut off by a large crushing noise and before she knew it she had been stepped on by the beast and was knocked out.

'Looks like it up to me.' Finn mumbled to himself. 'I'm gonna take this guy down.'

-Somewhere else but I bet you guys know where because of the characters I'm gonna put in.-

Fionna jerked up when she heard a loud roar coming from somewhere. Followed by someone shouting.

'Marsh, did you hear that?' Cake was out so Marshall was watching over her until she got back.

'Noo I'm pretty sure it's just the wind...' He said trying to get Fionna to stay.

'I'm going to check it out.' Marshall jolted up and stopped her.

'Dude what the heck? I'm an adventurer and I need to help whoever is in danger!'

'Ugh Fionna as much as I would like to go on some crazy adventure with you, Cake won't let me hang out with you anymore if I let you go.'

'And since when did my sister ever stop you?' She asked getting annoyed.

'Hm you're right. But let me get something from my house first. You wanna come?'

'Ok but you gotta make sure we get to that thing fast.'

'Don't worry about you're little problem.'

With that Marshall grabbed her by her arms and flew off to his house.

When they were in, Marshall went up to his room and Fionna followed.

'What excatly are we looking for? You only need your axe-bass.'

'This.'

Marshall pulled out a large, thin box. He dusted it off and threw the lid away. Inside was a sword. A long and tall one at that too. It was completely dark and it had a demon's horn at the end of the hilt.

'Woah that's pretty big.'

'Huh yeah it is. If you put in on the ground the tip'll reach my shoulders.' He bragged.

'What's it made of?'

'Obsidian.'

'Cool.' Fionna was now going to reach for it.

'What do you think you're doing?' Marshall grabbed her hand and threw it back.

'This...is MY sword. You have your own crystal sword.'

'Aww c'mon that sword looks so cool!' She complained.

'Heh yeah well sucks for you!' Marshall grabbed the sword and because it was so big and heavy, he needed to arms to carry it around.

'So let's go and adventure.' The two ran to the source of the noise quickly.

-Back with Finn-

'This is it I guess.' He thought. 'I'm on the ground facing certain death. Funny I had never thought I would be killed by a monster.' He thought again.

Finn lay bleeding on the ground and the monster was getting ready to crush him with it's fist.

'Oh well it's been a life well lived.' He looked over to his two unconscious friends who were right beside him.

'Thanks for everything guys.' He whispered as the monster launched it's fist to Finn.

This was it.

No it can't be.

But it is.

Finn expected to get a quick and painless death but something stopped it. Instead of hearing his bones being crushed, he heard a cutting noise and the monster's roar. He saw that it's hand had been cut off. But who saved him? Oh well it's time to black out too I guess.

Finn blacked out and waited for something to wake him up but nothing did. At least now.

Fionna POV

I ran with Marshall over to the noise. I couldn't stop looking at his obsidian sword. He carried it while flying. Eventually we found this huge monster about to crush someone.

'NO!' I shouted. Good thing it's back was facing us or we'd be screwed.

'Marshall throw me up to the thing's back while you cut off his hand!' I shouted over to him.

'Will do!' He dropped his sword and flung me really hard to the thing's back. I saw him recover his sword and cut off the thing's hand before anyone would get hurt. I climbed onto his neck and stabbed it deep into it.

I continued to go deeper and eventually I ran across his neck with my sword in my hand in an effort to decapitate it. And of course...it had worked. The thing dropped to the side and I got off it's lifeless body.

Marshall flew next to me and said: 'Alright the damage is done so let's get you home before Cake finds out about this.'

'What dude you can't be serious. We've gotta help those guys.' I pointed over to the three who were out, beaten and bleeding badly.

'Ugh what? you can't be serious.'

I gave him and angry look.

'Fine. We'll go help them.'

'Ok then.'

I grabbed the guy who was about to get crushed and oh, what's this? He has a dog. I grabbed his dog too.

'Marshall could you get the third one? My hand are kinda full.'

He grabbed the bleeding girl and we headed over to the hospital in the Candy Kingdom.

Marshall POV.

This sucks. I have to carry this girl and my sword which I need TWO DAMN hands to carry. Fuck my life. And oh! It just gets better! It turns out were going over to Pinky's! How absolutely delightful! Ugh I hate all this.

I noticed the Candy Kingdom got closer and closer. Thank GOD we fought this thing at sunset. Or else I couldn't fight properly.

What is wrong with this girl? I noticed she has two weapons on her and she gets beaten up! I only need one weapon to stay alive so why won't this girl live?

Oh well...Heh funny this girl has a bass that looks...exactly like...mine? This is freaky. When we reached the hospital part, we gave them to doctor prince and soon enough the three were already in their own beds while heavily bandaged.

'Marshall you watch over these guys while I head home.' Fionna said to me.

'Aw damn it!' I said to myself when Fionna had left. I laid my sword down next to the chair I sat on.

This blows like fuck.

I decided to get a closer look at the three.

A dog

A vampire

and oh what's this? A boy? Hah this is as freaky as it gets huh?

Then I decided to sleep on this candy chair. Ugh how uncomfortable.

-The next Morning-

Normal POV

Morning came and Marshall was still asleep in the hospital room where three visitors had been.

Finn woke up slowly and he could see he was in a hospital. He had bandages all over him and he saw in the bed on the left that Jake was there and on my right was Marceline.

Finn POV

At the end of my bed however was uh a male vampire? He was sleeping with his mouth open and drool dripped from his mouth.

I just hope that monster was killed. Only one way to find out.

I tried to talk but I ended up coughing. The coughing was loud enough to wake up the vampire at the end of my bed.

'Huh what?' He mumbled.

'Oh hey little man. You're awake.' He said smiling at me.

'Uh yeah...where am I?' I asked.

'Hospital. You were pretty banged up from yesterday.'

'Did you kill the thing?' I felt like blacking out again.

'Hell yeah we did but we also got you guys here.' He replied smiling.

'Oh that's good to know.' And then that's when I blacked out again. Stupid brain.

AutNotes: so what you guys think? continue or not? You guys want pairings in this story? I was thinking Marcelee because I am SO tired of Fiolee. Anyways tell me what you guys think. YOU NEED NOT LOGIN TO REVIEW! I ACCEPT EVEN THE MOST ANONYMOUS REVIEWS POSSIBLE! NO flames please. If you don't like it...DON'T FUCKIN REVIEW!